This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A346303 #13 Jan 24 2024 23:49:16 %S A346303 1,3,7,9,15,17,19,21,31,33,35,37,39,41,43,45,63,65,67,69,71,73,75,77, %T A346303 79,81,83,85,87,89,91,93,127,129,131,133,135,137,139,141,143,145,147, %U A346303 149,151,153,155,157,159,161,163,165,167,169,171,173,175,177,179 %N A346303 Positions of words in A076478 that start with 0 and end with 0. %C A346303 The sequences A346303, A171757, A346304, A346305 partition the positive integers. See A076478 for a guide to related sequences. %C A346303 The position of the words 0, 00, 000, 0000, ... (all-zero) in A076478 is given by A000225. So this sequence is given by the subsequence A000225 and filling the gaps halfway up (until the leading 0 toggles) with odd numbers, from 7 to 9, from 15 to 21, from 31 to 45 etc. So the first differences are 2, 4, 2, 6, 2, 2, 2, 10, 2, 2, 2, 2, 2, 2, 2, 18, 2, 2, ... which is A052548 with 1, 3, 7, 15,... (A000225) intermediate 2's. - _R. J. Mathar_, Sep 08 2021 %e A346303 The first fourteen words w(n) are 0, 1, 00, 01, 10, 11, 000, 001, 010, 011, 100, 101, 110, 111, so that a(3) = 7. %t A346303 (See A007931.) %Y A346303 Cf. A007931, A076478, A171757, A346304, A346305. %K A346303 nonn,base %O A346303 1,2 %A A346303 _Clark Kimberling_, Jul 21 2021